I had 213 Wealth, then I enter a PvP fight and suddenly I only got 11. The player I met in the PvP fight didnt have any units and when I left to world map, the game got all weird and had to be restarted.

Hey, do you still happen to have the log. Dof saves logs of 5 last sessions to the main folder. So if you haven't restarted the game more than five times since then, it should be there. There's a start time on top of each to help you tell which one of them it could be.